Brake-lock.



A. A. LINAM.

BRAKE LOOK.

I APPLIOATIOK FILE D KEPT. 24. 1914. 1, 127,035. Patented Feb. 2, 1915.

EEC-i=1- C Z I z EST-limoawtoz A .A.L,in am,

Willa woo i eeummtn ANDREW A. LINAM, OF PUBCEIAIJ, OKLAHOMA.

BRAKE-LOCK.

Application filed September 24, 1914.

To all whom it may concern:

Be it known that 1, ANDREW A. LINAM, a citizen of the United States,residing at Purcell, in the county of McClain and State of Oklahoma,have invented certain new and useful Improvements in Brake-Locks; and Ido declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to improvements in looks for retaining brakes onlocomotives or other railway rolling stock, in set position.

It is a well known fact that the air brakes ot' locomotives and othercoaches, left standing on sidings or in freight yards, often becomereleased by the fact that the air pressure within the brake operatingcylinders decreases. This often causes serious accidents by allowing thelocomotive or other coach, to shift upon the track.

In view of the above, it is highly desirable to provide simple meanswhereby the air brakes of a locomotive or other coach ma be positivelylocked in active position.

This my invention aims to accomplish by the provision of certain novelfeatures of construction and combination herein described and claimedand shown in the drawings wherein Figure 1 is a vertical section througha portion of a locomotive cab showing the application of my invention.the parts being shown in the position which they assume when locking thebrakes in active position; and Fig. 2 is a ho izontal section as seen onthe line 2-2 of Fig. 1.

In the accompanying drawing, I have shown a portion of a locomotive Lwhich is equipped with the usual cab C and floor F for sa d cab, saidfloor constituting a platform P in rear of the cab. Located beneath thefloor F. is the usual fluid pressure cylinder C which, through theinstrumentality of a piston (not shown) proiects and retracts a pistonrod R. the latter carrying a fork F on its free end. The fork F embracesa brake applying lever L which is pivoted to a portion of the locomotiveand to which a link or rod R is pivoted, said rod being connected to thebrake operating mechanism in a well known manner, forming no part of theresent invention.

Secured upon the top of the usual stutfing Specification of LettersPatent.

Patented Feb. 2, 1915.

Serial No. 863,334.

box S, on one end of the cylinder C, is a plate 1 which is provided witha pair of cars 2 between which one end of a latching lever 3 is pivoted,said lever having a depending shoulder or nose 4 formed intermediate itsends and being pivoted at 5 to an upright operating link 6 which risesthrough an opening 7 in the platform P, the upper end of said link 6being pivoted to the horizontal arm of a bell crank lever 8, while anoperating rod 9 is pivoted to the upright arm of said lever, said armprojecting through an opening 10 in the rear wall of the cab C andhaving a depending nose 11, coac ing with a stopplate l2 and beingprovided with an operating hand grip 13 on its inner end. As clearlyseen the free end of the lever 3 is guided in its vertic l movement byan upright guide 14. Coacting with the nose 4. is a stop or nose 15which rises f om a U-shaped plate 16, the latter straddling the upperend of the le er L and being secured thereon b a bolt 17.

With he parts as above desc ibed. when the rod R is proiected to rockthe lever L in a d ect on to apply the brakes. the nose t may be forcedinto the return path of the nose ]5 by raising the inner end of the rod9 to disengage its nose 11. This o eration positions the parts as seenin full lin s in Fig. 1. in which position, the lever L is locked inacti e pos t on, the eb p e enting re raction of the b akes until the leer 3 is r ised to the dotted line osit on. seen in Fig. 1 by properactuation of the rod 9.

It will likewise be seen. by reference to the dot ed lines in Fig. 1,that the lever 3 may be locked in inactive position by engaging the nose11 with the plate 12. thereby p eventing the locking lever 3 frombecoming active when the brakes are in actual service, thatis. when thelocomotive or coach is bein." propelled.

From the fo egoing description. taken in connection with theaccompanying d awings, it will be seen that I have produced an extremelysimple construction which may be readily attached to the air brakesystem of practically any locomotive or coach and that this s stemossesses numerous ad antageous features for carrying out the obiects otthe in ention.

Having thus descri ed my invention. what I claim as new and desire tosecure by Letters Patent is 1. The combination with a fluid pressurecylinder, a piston rod sliding through one end thereof, and a brakeapplying lever having one end pivoted directly to said piston rod, of anose rigidly secured to thelever, and a releasable catchcoacting withsaid nose to retain the lever in active position.

2. The combination With a fluid pressure cylinder, a piston rod slidingthrough one end thereof, and a brake applying lever having one endpivoted directly to said piston rod, of a U-shapedplate rigidly. securedto and straddling said lever, a nose on said plate, anda releasablecatch coacting with said nose to retain said lever in active position.

8. The combination With a fluid pressure cylinder, apiston rodslidablethrough one end thereof, and a brake applying lever having one0i its ends mounted upon a relatively fixedpivot, of a plate rigidlysecured "to one end of said lever and having a stop projectinglongitudinally from one end thereof, a looking lever pivoted near thepiston rod andhaving a stop coasting with the stop on said firstmentioned lever for looking the latter inactive position, and Operatingmeans for swinging said locking lever to, active and inactive position.

- 4;. The combination with a fluid pressure cylinder, a piston rodsli'd'able through one end thereof, and a brake applying lever'h'avingone of its ends mounted upon a relatively'fix'ed pivot, of a U-shapedplate straddling the free end of said lever and havinga nose, a lockinglever pivoted near the piston rod and having a nosecoacting with thenose on said U-fshaped plate for retaining the brake applying lever inactive position, and means for moving said locking le'i' i'ar to activeand inactive-positioni 5. The combination with a fluid pressure cylinderhaving a stufling box on oneend, a

piston rod slidable through said ,stufling box, a brake applying leverpivotally connected at its upper end to said piston rod and having itsloWer end mounted on a rela tively fixed pivot, a U-shaped'platestraddling the upper endof said lever and having an upstanding nose, aplate secured to 6. The combination with a fluid pressure 7 cylinderhaving a stufling box on one'end, a piston rod slidable through saidstufling box, a brake applying lever pivotally connected at its upperend to said piston rod, i

and having its loWer end mounted on a relatively fixed pivot, aU-s'haped plate straddling the upper end of said lever and having anupstanding 'nosaa late secured to the upper side of said'stu ng box, asub- 1 stantially horizontal locking lever pivoted atone end of saidplate and having a depending nose, an upright link pivoted to the freeend of said locking lever, a bell crank lever having one of itsarm'spivoted to the upper end of said link, a substantially horizontaloperating rod pivoted to the other arm of said bell crank lever andhaving a depending nose, and a locking plate beneath said nose andcoacting therewith for retain-i ing the operating rod in retractedposition.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses;

, p ANDREW A, ,LIYNAM, Witnesses:

J. D. T. BRYAN, G. M. RICHARDS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner a: Patents, V

Y Washingt0n,-D. G.

